Circuit/System Verification
WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect for DTC P1AC6, P0335, or any communication U-code DTCs.
- If the specified DTCs are set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Clear the DTC information.
- Ignition OFF for 1 minute.
- Ignition ON.
- Retest for DTC P16F3.